3BOYATSIS RE. The competent manager : A model for effective per- formance [M]. New York: Wiley, 1982.
4CHORVAT VP. Toward the construct validity of assessment center Leader ship dimensions : A muhitrait - multimethod investigation U- sing Confirmatory factor analysis [ D ]. Florida: University South Florida Unpublished Doctor Thesis, 1994.
5COCKERILL AP. Managerial competence as a determinant of organiza- tional performance [ D ]. London: University of London Unpublished Doctoral Dissertation, 1989.